66007349089909 has 2 divisors, whose sum is σ = 66007349089910. Its totient is φ = 66007349089908.

The previous prime is 66007349089907. The next prime is 66007349089933. The reversal of 66007349089909 is 90998094370066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38197072222884 + 27810276867025 = 6180378^2 + 5273545^2 .

It is a cyclic number.

It is not a de Polignac number, because 66007349089909 - 2¹ = 66007349089907 is a prime.

It is a super-4 number, since 4×66007349089909⁴ (a number of 56 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

Together with 66007349089907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66007349089907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33003674544954 + 33003674544955.

It is an arithmetic number, because the mean of its divisors is an integer number (33003674544955).

Almost surely, 2^{66007349089909} is an apocalyptic number.

It is an amenable number.

66007349089909 is a deficient number, since it is larger than the sum of its proper divisors (1).

66007349089909 is an equidigital number, since it uses as much as digits as its factorization.

66007349089909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158723712, while the sum is 70.

The spelling of 66007349089909 in words is "sixty-six trillion, seven billion, three hundred forty-nine million, eighty-nine thousand, nine hundred nine".